What is what area code is 623?

Area code 623 serves the western portion of the Phoenix metropolitan area in Arizona. It covers cities and communities including:

  • Glendale
  • Peoria
  • Surprise
  • Sun City
  • El Mirage
  • Youngtown
  • Avondale
  • Goodyear
  • Buckeye

It's important to note that this area code is an overlay for the original area%20code 602, which serves Phoenix itself and the surrounding areas. This means that within the same geographic region, different phone numbers can have either a 602 or a 623 area code. Because of this overlay, ten-digit dialing (area code + phone number) is required for all local calls in the 602/623 regions. Ten-digit%20dialing is mandatory.